YIELD AND YIELD ATTRIBUTES AS EVALUATED BY BORON APPLICATION AT SEEDLING AND TILLERING STAGES OF WHEAT

Abstract

A pot experiment was carried out at the net house of the Dept. of Agronomy, Sher-eBangla

Agricultural University, Dhaka during the period from November 2015 to March 2016 to study the effect of boron (B) application at seedling and tillering stages on the grain yield of two wheat varieties. The experiment consisted of three levels of boron viz. 0, 0.50 and 1 kgBha -1 and two wheat varieties viz. BARI Gom 23 and BARI Gom 24. The effect of B on different plant characters, yield components and yield of wheat was found significant. The tallest plant (53.17 cm) was found when the crop was fertilized @ 0.5 kgBha -1 which was statistically identical with 1 kgBha and the shortest plant height (39.56 cm) from control at 40 days after sowing in tillering stage. The highest seed weight plant -1 (10.67g) was found in BARI Gom 24 at tillering stage with the application of boron @ 0.50 kgha -1 . The highest 1000 grain weight (46.62 g) was found by applying B @ 0.5 kgha -1 and the second highest 1000 grain weight (40.82 g) was found from control. The production of highest straw yield was (6.15 tha -1 ) in 1 kg B ha -1 might be due to the fact that B tends primarily to encourage vegetative growth. The highest biological yield (10.53 tha -1 ) was found in BARI Gom 24 with the dose of 0.5 kgha -1 , whereas the BARI Gom 23 showed 9.43 tha . The highest biological yield (7.92 tha -1 ) and the lowest (6.94 tha -1 ) were found in tillering and seedling stage, respectively. 0.5 kgBha -1

The highest harvest index (43.62%) was observed in which was statistically similar (41.82%) with 1 kgBha -1 and the lowest (39.94%) was found from the control. The BARI Gom 24 showed the maximum harvest index (44.10%) with the application of 0.5 kgBha -1 , whereas BARI Gom 23 showed the nearest result (43.14%).